package cn.tedu.sp02.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.service.ItemService;
import cn.tedu.web.util.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Random;

@RestController
@Slf4j
public class ItemController {

    @Autowired
    private ItemService itemService;

    //获取商品列表
    /**
     * JsonResult:
     * code msg data
     */
    @GetMapping("/{orderId}")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId) throws InterruptedException {

        List<Item> items = itemService.getItems(orderId);
        JsonResult result = JsonResult.ok().data(items);

        // 随机的延迟代码
        // 90%概率会执行延迟代码
        if(Math.random() < 0.9) {
            int t = new Random().nextInt(5000);
            log.info("随机延迟： " + t);
            Thread.sleep(t);
        }

        return result;

    }

    //减少商品库存
    @PostMapping("/decreaseNumber")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items) {

        itemService.decreaseNumber(items);
        return JsonResult.ok().msg("减少商品库存成功~");

    }

}
